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as assessed by productivity, total manufacturing cost per component or some other suitable criterion.
1.2 Problem statement
CVD carbide cutting tools are frequently used during titanium machining, but the tool wear is often fast and extensive because titanium is the difficult to machine
materials. Wear mechanism on the flank of a cutting tool is caused by friction between newly machined surface and the cutting tool, which plays predominant role
in determining tool life. Tool wear and failure mechanisms are of great practical interest because they will affect machining costs and quality. Tools that wear slowly
have comparatively long and predictable service lives, resulting in reduced production costs and more consistent dimensions and surface finish. Tools that fail
rapidly and unpredictably increase costs and scrap rates.
Tool wear is inherent in machining. There are many steps and measures taken to reduce the effect of tool wear on cutting tools. One of the steps is applying surface
treatment on the base cutting tool material. By studying the behavior of the tool wear with respect to machining parameters, tool life can be optimized by choosing the
right machining parameters.
According to Schneider et al. 2005 the optimum tool is not necessarily to be expensive and not always the same tool that was used for the job last time but the
best tool is the one that has been carefully chosen to get the job done quickly, efficiently and economically. This mean, it is necessary to characterize specific
cutting tool and work-piece combination to understand the interaction between machining parameters and tool wear performance.
1.3 Objectives
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The objectives of this study are: i.
To study the influence of machining parameters to the tool wear of CVD carbide tool during turning of Ti-6Al-4V ELI under dry condition.
ii. To define optimum process parameter settings to maximize tool life of CVD
carbide tool. iii.
To develop a mathematical modeling of tool life.
1.4 Scope
